Loveshaw LITTLE DAVID CAC51 User manual

LITTLE DAVID
TAPE CARTRIDGE MANUAL
.CAC51
THE LOVESHAW CORPORATION LOVESHAW - EUROPE
2206 EASTON TURNPIKE, BOX 83 UNIT 9, BRUNEL GATE
SOUTH CANAAN, PA 18459 W. PORTWAY INDUSTRIAL ESTATE
ANDOVER,HAMPSHIRESP103SL
TEL: [phone] ENGLAND
FAX: [phone]-3575-11

1
Part and Instruction Manual
Loveshaw Pressure Sensitive Tape Cartridge
CAC50 – 2” wide tape
CAC51 – 3” wide tape

2
Theory of Operation:
Pressure sensitive tape is applied to the corrugated box as it passes by the
cartridge. The box will contact the front arm roller which has pressure sensitive
tape adhesive side facing outward towards the oncoming box. The front leading
side of the box will contact the front roller arm and the tape will adhere to the
box. As the box continues to move forward the front roller arm and knife arm will
be rotated into the frame of the cartridge. The amount of force exerted on the
box as tape is being applied is adjustable by changing the position of the main
spring. The front arm initial application force can be set to accommodate the
strength of the box as well as the sturdiness of the contents in the box.
As the front arm application roller transitions from the leading panel of the box
to the top major flaps, the knife arm contacts the major flaps. The knife guard is
linked to the front roller arm and retracts to clear the knife blade. As the knife
arm rotates into the cartridge the knife activation spring compresses,
generating cut force.
As the box proceeds pass the cartridge the front arm roller will no longer
contact the major flaps of the box, but the rear wipe roller will still contact the
major flaps. Eventually as the box travels the knife arm will completely stop
contacting the major flaps of the box. This will allow the knife arm to travel back
towards its home position allowing the knife blade to puncture and cut through
the tape. As the box continues move the rear wipe arm roller will no longer
contact the major flaps of the box. This will allow the wipe arm roller to spring
out of the cartridge and contact the rear tab length of tape and press against the
trailing panel of the box.
The box travelling pass the cartridge is the vehicle which pulls the tape through
the cartridge. The cartridge is design to run most pressure sensitive tapes with
no required adjustments. However in some cases it may be necessary to adjust
tape tensions. The cartridge will operate at speeds up to 90 feet/minute.

3
Important Safety Notices:
Before installing operating or servicing the tape cartridges read
carefully and understand the following precautions:
•Never service the tape cartridges when installed in an
operating machine.
•Use lock out / tag out protocols before installing or removing
cartridges from machinery.
•Do not bypass or remove safety guard on knife blade.
•Observe caution when near tape cartridge knife. The knife
blade is protected by a locking cover which is held closed by
the link bar.
•Never make any adjustments to the tape cartridges when
installed in an operating machine.

4
Tape Threading:
The first step is to place the tape roll, on the cartridge tape core. Make sure that
the tape roll is fully bottomed against the face of the core. Spring clips on the
side of the tape core makes up for inner diameter core fluctuations of the tape
roll.
Tape roll must be placed on tape core with adhesive side of tape facing to the
right. Refer to figure 2 and 3 for proper orientation.
Continue threading the tape behind the black knurled tension roller. The
adhesive side of the tape contacts the knurled roller. The tape is then threaded
over the aluminum idler roller with the non adhesive side of the tape contacting
it. The tape is then fed through the horse shoe bracket roller section of the
cartridge. The tape is threaded behind the two small diameter black knurled
rollers (upper and lower) and in front of the nylon idler roller. The adhesive side
of the tape contacts both small knurled rollers. The tape is then threaded
between the finger plate and the tape guide fingers. This completes the
threading Refer to figure 3 and 4.
Tape
core
Figure 1 Figure 2
Adhesive
side

5
between the finger plate and the tape guide fingers. This completes the
threading Refer to figure 3 and 4.
Figure 3
Figure 4
Tension roller
Idler roller
Horse shoe bracket
Lower knurled roller
Idler roller - nylon
Upper knurled
Tape guide plate
Tape guide fingers

6
Adjustments:
•Aligning tape :
Aligning tape side to side with in the cartridge frame is done by changing
the position of the tape core. This is done by first loosening the tape core
locking screw with a 3mm hex key. Turn the tape core locking screw
counter clockwise allowing for the desired amount of adjustment to be
made. Now turn the tape core height adjusting nut until the desired result
is obtained. By turning the tape core height adjusting nut clockwise the
tape core height position will decrease moving the tape closer to the mill
stand side of the cartridge. By turning the tape core height adjusting nut
counter clockwise the tape core height position will increase. This will
make the tape track further away from the mill stand. After each
adjustment always tighten the tape core locking screw. Failure to do so
will allow the tape core position to change as tape is being pulled off the
tape roll. Refer to figure 5
Figure 5
Height adjustor
Locking screw
Drag adjustor

7
•Setting tape core drag:
The tape core drag setting is factory set to not allow a full roll of tape to
free wheel as tape is being pulled off it. Different types of tapes adhesives
require different pull off force. It is crucial for proper operation that the
tape roll is not allowed to free wheel or roll up on its self. To increase tape
drag turn the knurled adjustor clockwise and to decrease turn it counter
clockwise. Refer to figure 5.
•Setting the knurled tension roller:
The knurled tension roller is factory set to its optimal setting for a thin
milled tape. Not enough tension results in poor tape cutting; adversely too
much tension results in tape breakage or the tape snapping back when
the tape is cut. Rotating the tension roller adjustor nut clockwise
increases tension and rotating it counter clockwise decreases tension.
Refer to figure 6.
•Setting main spring tension:
Setting the main spring tension is done by moving the end of the spring to
a different preset position. The main spring tension is factory set to a mid
position. The spring is set from lightest to stoutest dependant on the
Figure 6
Tension roller
adjustor nut

8
strength of the corrugated box and the fill of the contents. Void filled,
weak corrugated boxes would be set to the lightest setting while strong
corrugated box with overfill would process better with the main spring set
stronger. The main spring only effects the application and wipe rollers.
Refer to figure 7.
•Setting knife cut force spring:
The knife cut force spring is a compression type spring. The spring is
used to articulate the knife arm when the box release it. The knife springs
out of the cartridge and through the tape. The amount of force that the
knife arm cuts with is controlled by the compression spring. By turning
the adjust nut clockwise the amount of spring force is increased. By
turning the adjustor nut counter clockwise the force is decreased. Refer
to figure 8.
Figure 7
Main spring

9
•Front arm stopper adjustment:
The front arm stop adjustment is factory set to insure that the front arm
roller stays in contact with major flaps of the box. This allows for a tight
tape seal across the horizontal length of the box. The adjustor does not
need to be adjusted for normal applications. In some cases it may be
necessary to adjust the stop depending on the type of machine that the
cartridge is being used in. If the cartridge is placed in a machine and the
tape is not being applied to the major flaps with enough pressure an
adjustment will be necessary. This will be evident by inspecting the box
as it exits the machine. Normal symptoms include the tape bridging
across the major flaps, or the tape bunching up on the major flaps after
the tape was cut. Refer to figure 9.
Figure 8
Figure 9
Adjustor nut
Front arm stop

10
Maintenance:
•Application / Wipe roller replacement:
Roller replacement requires the use of a 3mm hex key wrench and a
propane torch. The screws must first be heated in order to break the
loctite screw adhesive loose. The application roller has a one way clutch
roller in it and the rear wipe roller does not have the clutch roller. It is
important to check to rotation of the new application roller when installing
it. The roller must turn in the direction of box travel. Refer to figure 10.
•Knife blade replacement:
Knife blade replacement requires either an 8mm box or socket wrench.
By loosening the two holding screws the blade can be slid out and the new
blade slid in. There is locating pin that insures proper orientation. Take
caution not to set the blade to high in the holder so that the knife guard
doesn’t collide with it. Refer to figure11.
Figure 10
Mounting hardware

11
Warning: – Use extreme care when working near the knife blade. The
blade is extremely sharp. If care is not taken severe personal injury can
result.
Figure 11
Knife blade
Holding screws
Knife guard

12
Troubleshooting:
Problem Cause Corrective Action
The tape is notcut, or the cut
is not clean.
Knife blade is damaged or
needs to be cleaned.
Tape tension needs to be
increased.
Tape isnot centered on rollers.
Knife spring missing orworn.
Replace knife blade.
.
Increase drag on knurled
tension roller.
Adjust tape core height.
Replace spring.
Front tab lengthtoo long.
Cartridge threaded incorrectly.
Tape tension needs to be
increased.
Tape isnot centered on rollers.
Check threading diagramon
cartridge frame.
Increase drag on knurled
tension roller.
Adjust tape core height.
Rear tab not fully wiped down
Rear tab length too long.
Main spring tension to weak.
Main spring broken or worn.
Increase drag on knurled
tension roller.
Adjust main spring tension.
Replace main tension spring.
Rear tab too long.
Knife spring worn.
Not enough tape tension
Replace knife spring.
Increase drag on knurled
tension roller.

1
1
2
2
3
3
4
4
A A
B B
TITLE
DWG NO SCALE
DRAWN
CHECKED
APPROVED
LOVESHAW an Company
RT. 296, SOUTH CANAAN, PA.
ITW
MATERIAL
TOLERANCES UNLESS
OTHERWISE NOTED:
INCH
METRIC
.X
.XX
.XXX
= .050
= .015
= .005
+
-+
+
--
-
.X
.XX
.XXX
= 1.0mm
= .3mm
= .1mm
+
+
+
-
-
-
FRACTIONS 1/64
+
-
ANGLES 1/2
+
-
-
MACH.
FINISH 125
CAD FILE
PLOT DATE
DRAWN DATE
DO NOT SCALE PRINT
MAT'L
ST. ST.
STD
PART #
STAINLESS : NO FINISH
THIS DRAWING AND SUBJECT MATTER THEREON IS THE EXCLUSIVE PROPERTY OF
LOVESHAW-ITW AND IS TO BE TREATED BY YOU AS CONFIDENTIAL PRPRIETARY
INFORMATION. THIS DRAWING OR SUBJECT MATTER THEROF SHALL NOT BE
REPRODUCED OTHER THAN FOR YOUR OWN USE OR TO BE DISCLOSED TO OTHER
WITHOUT THE EXPRESSED WRITTEN CONSENT OF LOVESHAW-ITW AND WILL BE
RETURNED TO LOVESHAW-ITW UPON REQUEST. BRYCEF
9/19/2012
9/19/2012
CAC51 FRONT ARM ASSY
FRONT ROLLER ARM ASSY.
CAC51 FRONT ARM ASSY.idw
Parts List
DESCRIPTION
PART NUMBER
QTY
ITEM
ARM, FRONT (MAIN)CAC50-005-411
ARM, FRONT (TOP)CAC50-006-412
SHAFT FRONT ROLLER 3"CAC51-002-3
13
SHAFT 3" PIVOT ARMCAC51-011-31
4
ROLLER CENTERCAC51-016-3
1
5
TAPE GUIDE PLATE 3"CAC51-019-4
16
HORSE SHOEJBW1014-41
7
STOP TAPE GUIDE PLATEPSC139-3
18
SPRING, GUIDE PLATEPSC321022A-4
19
SPRING, FINGER PLATEPSC321022-3110
PLATE, TAPE HOLD DOWN 3"PSC441013-4
111
SPACER, FRONT ARMSCAC51-028-3
112
CLUTCH ROLLER ASSEMBLY.CRA51113
KNURLED ROLLER ASSEMBLY.KNRA300/51/T
114
KNURLED ROLLER ASSEMBLY.KNRA300/51/B
115
BUSHING50185-049216
M4 X 15 BH SCREW
FBHME015P10117
SHAFTCAC51-029-3
118
FLAT HEAD CAP SCREW M5 X 16 LG.FFHMF016P10819
M4 X 16 FHS
FFHME016P10620
FHSH M5x8FFHMF008P10121
BEARINGPSC321040222
REVISION HISTORY
REV DESCRIPTION DATE BY
A RELEASED 9/19/2012 BJF
20 19
20
20
19
1
9
22
16
17
10
15
18
4
5
13
611
14
16
22
7
8
12
20
19
20
2
21
19
19

REAR ARM ASSEMBLY
KEY PART NUMBER DESCRIPTION QTY
1 CAC50-102-6 FRAME - MAIN 1
2 CAC50-004-4 CONN. LINK - KNIFE GUARD 1
3 50186-007 BRONZE FLANGE BUSHING 6
3/8 X 1/2 X 1/2
4 CAC50-049-3 SPACER - REAR ARM PIVOT 2
5 ------------------ 3/8 DIA. NOM SAE WASHER 1
6 CAC50-007-4 REAR ARM - TOP 1
7 CAC51-001-3 SHAFT - WIPE ROLLER 3
8 PSC12/3-3 BUSHING - WIPE ROLLER 2
9 LP06B-003B-3 WIPE ROLLER 2
10 CAC51-010-3 STUD - REAR ARM SPRING 1
11 CAC51-011-3 SHAFT - PIVOT ARM 2
12 PSC501101-4 CARTRIDGE MAIN SPRING 1
13 CAC50-002-5 FRAME - TOP 1
14 ------------------ M5 X 10 FH. SCREW 13
15 CAC50-043-3 SPACER - REAR PIVOT ARM 1
16 ------------------ M5 X 12 FH. SCREW 23
17 CAC50-003-4 CONNECTING LINK - ARMS 1
18 CAC50-008-4 REAR ARM - LEFT 1
19 LP06B-003A-3 SLEEVE - WIPE ROLLER 1
20 CAC51-014-3 SPACER - REAR CONN. ARMS 1

KNIFE ARM ASSEMBLY
KEY PART NUMBER DESCRIPTION QTY
1 CAC50-010-4 KNIFE ARM - TOP 1
2 CAC50-009-4 KNIFE ARM - MAIN 1
3 PS4117A-3 KNIFE 1
4 LP06B-005-3 PLATE - KNIFE 1
5 CAC51-011-3 SHAFT - PIVOT ARM 2
6 50185-049 BRONZE FLANGE BUSHING 2
3/8 X 1/2 X 3/8
7 CAC50-006-4 FRONT ARM - TOP 2
8 CAC51-016-3 CENTER ROLLER - 1.12 DIA. 1
9 CAC50-017-3 SHAFT - KNIFE ARM 1
10 CAC50-038-3 THREADED SUPPORT SHAFT 1
11 CAC50-005-4 FRONT ARM - MAIN 1
12 ------------------ M5 X FH. SCREW 13
13 CAC51-007-3 KNIFE BRACKET 1
14 ------------------ M5 X 12 BUT. HD. SCREW 2

KNIFE GUARD ASSEMBLY
KEY PART NUMBER DESCRIPTION QTY
1 CAC50-003-4 CONNECTING LINK - ARMS 1
2 CAC50-004-4 CONNECTING LINK - KNIFE GUARD 1
3 CAC51-018-4 KNIFE GUARD 1
4 CAC50-002-5 FRAME - TOP 1
5 50186-007 BRONZE FLANGE BUSHING 6
3/8 X 1/2 X 1/2
6 CAC50-041-3 SPACER - KNIFE GUARD 1
7 CAC50-048-3 SHAFT - KNIFE GUARD 1
8 50186-039 BRONZE FLANGE BUSHING 4
3/8 X 1/2 X 3/8
9 PSC301110-3 SPACER 1/2 ID X 1 1/8 LONG 1
10 CAC51-001-3 SHAFT - WIPE ROLLER 3
11 CAC50-005-4 FRONT ARM - MAIN 1
12 CAC50-102-6 FRAME - MAIN 1
13 CAC51-013-3 SPACER - CONN. ARM KNIFE COVER 1
14 ------------------ M5 X 10 BUTTON HD. SCREW 3